1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS 24 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define __BTSTACK_FILE__ "nordic_le_counter.c" 39 40 // ***************************************************************************** 41 /* EXAMPLE_START(nordic_le_counter): LE Peripheral - Nordic SPP-like profile 42 * 43 */ 44 // ***************************************************************************** 45 46 #include <stdint.h> 47 #include <stdio.h> 48 #include <stdlib.h> 49 #include <string.h> 50 51 #include "nordic_le_counter.h" 52 #include "btstack.h" 53 #include "ble/gatt-service/nordic_spp_service_server.h" 54 55 #define HEARTBEAT_PERIOD_MS 1000 56 57 /* @section Main Application Setup 58 * 59 * @text Listing MainConfiguration shows main application code. 60 * It initializes L2CAP, the Security Manager and configures the ATT Server with the pre-compiled 61 * ATT Database generated from $nordic_le_counter.gatt$. 62 * Additionally, it enables the Battery Service Server with the current battery level. 63 * Finally, it configures the advertisements 64 * and the heartbeat handler and boots the Bluetooth stack. 65 * In this example, the Advertisement contains the Flags attribute and the device name. 66 * The flag 0x06 indicates: LE General Discoverable Mode and BR/EDR not supported. 67 */ 68 69 /* LISTING_START(MainConfiguration): Init L2CAP SM ATT Server and start heartbeat timer */ 70 static btstack_timer_source_t heartbeat; 71 static hci_con_handle_t con_handle = HCI_CON_HANDLE_INVALID; 72 static btstack_context_callback_registration_t send_request; 73 static btstack_packet_callback_registration_t hci_event_callback_registration; 74 75 const uint8_t adv_data[] = { 76 // Flags general discoverable, BR/EDR not supported 77 2, BLUETOOTH_DATA_TYPE_FLAGS, 0x06, 78 // Name 79 6, BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME, 'A', 'M', 'B', 'E', 'R', 80 // UUID ... 81 17, BLUETOOTH_DATA_TYPE_COMPLETE_LIST_OF_128_BIT_SERVICE_CLASS_UUIDS, 0x6e, 0x40, 0x0, 0x1, 0xc3, 0x52, 0x11, 0xe5, 0x95, 0x3d, 0x0, 0x2, 0xa5, 0xd5, 0xc5, 0x1b, 82 }; 83 const uint8_t adv_data_len = sizeof(adv_data); 84 85 /* LISTING_END */ 86 87 /* 88 * @section Heartbeat Handler 89 * 90 * @text The heartbeat handler updates the value of the single Characteristic provided in this example, 91 * and request a ATT_EVENT_CAN_SEND_NOW to send a notification if enabled see Listing heartbeat. 92 */ 93 94 /* LISTING_START(heartbeat): Hearbeat Handler */ 95 static int counter = 0; 96 static char counter_string[30]; 97 static int counter_string_len; 98 99 static void beat(void){ 100 counter++; 101 counter_string_len = sprintf(counter_string, "BTstack counter %03u", counter); 102 } 103 104 static void nordic_can_send(void * context){ 105 UNUSED(context); 106 printf("SEND: %s\n", counter_string); 107 nordic_spp_service_server_send(con_handle, (uint8_t*) counter_string, counter_string_len); 108 } 109 110 static void heartbeat_handler(struct btstack_timer_source *ts){ 111 if (con_handle != HCI_CON_HANDLE_INVALID) { 112 beat(); 113 send_request.callback = &nordic_can_send; 114 nordic_spp_service_server_request_can_send_now(&send_request, con_handle); 115 } 116 btstack_run_loop_set_timer(ts, HEARTBEAT_PERIOD_MS); 117 btstack_run_loop_add_timer(ts); 118 } 119 /* LISTING_END */ 120 121 static void nordic_data_received(hci_con_handle_t tx_con_handle, const uint8_t * data, uint16_t size){ 122 if (size == 0 && con_handle == HCI_CON_HANDLE_INVALID ){ 123 con_handle = tx_con_handle; 124 printf("Connected with handle 0x%04x\n", con_handle); 125 } else { 126 printf("RECV: "); 127 printf_hexdump(data, size); 128 } 129 } 130 131 /* 132 * @section Packet Handler 133 * 134 * @text The packet handler is used to: 135 * - stop the counter after a disconnect 136 */ 137 138 /* LISTING_START(packetHandler): Packet Handler */ 139 static void packet_handler (uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 140 UNUSED(channel); 141 UNUSED(size); 142 143 switch (packet_type) { 144 case HCI_EVENT_PACKET: 145 switch (hci_event_packet_get_type(packet)) { 146 case HCI_EVENT_DISCONNECTION_COMPLETE: 147 con_handle = HCI_CON_HANDLE_INVALID; 148 break; 149 default: 150 break; 151 } 152 break; 153 } 154 } 155 /* LISTING_END */ 156 157 158 int btstack_main(void); 159 int btstack_main(void) 160 { 161 // register for HCI events 162 hci_event_callback_registration.callback = &packet_handler; 163 hci_add_event_handler(&hci_event_callback_registration); 164 165 l2cap_init(); 166 167 // setup LE device DB 168 le_device_db_init(); 169 170 // setup SM: Display only 171 sm_init(); 172 173 // setup ATT server 174 att_server_init(profile_data, NULL, NULL); 175 176 // setup Nordic SPP service 177 nordic_spp_service_server_init(&nordic_data_received); 178 179 // setup advertisements 180 uint16_t adv_int_min = 0x0030; 181 uint16_t adv_int_max = 0x0030; 182 uint8_t adv_type = 0; 183 bd_addr_t null_addr; 184 memset(null_addr, 0, 6); 185 gap_advertisements_set_params(adv_int_min, adv_int_max, adv_type, 0, null_addr, 0x07, 0x00); 186 gap_advertisements_set_data(adv_data_len, (uint8_t*) adv_data); 187 gap_advertisements_enable(1); 188 189 // set one-shot timer 190 heartbeat.process = &heartbeat_handler; 191 btstack_run_loop_set_timer(&heartbeat, HEARTBEAT_PERIOD_MS); 192 btstack_run_loop_add_timer(&heartbeat); 193 194 // beat once 195 beat(); 196 197 // turn on! 198 hci_power_control(HCI_POWER_ON); 199 200 return 0; 201 } 202 /* EXAMPLE_END */ 203